villanelle rules: 19 lines, 2 repeating rhymes and 2 refrains, 5 tercets and 1 quatrain,
A1 b A2 / a b
A1 / a b A2 / a b A1 / a b A2 / a b A1 A2.- capitals refrain lower case rhymes.
1 and 3 line of 1st tercet repeated alternately in the last lines of the succeeding stanzas; then in the final stanza, the refrain serves as the poem’s two concluding lines
from French